Ecological fidelity and spatiotemporal resolution of arthropod death assemblages from rodent middens in the central Atacama Desert (northern Chile)

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dc.contributor.authorDezerald, Olivier
dc.contributor.authorLatorre, Claudio
dc.contributor.authorBetancourt, Julio L.
dc.contributor.authorBrito Vera, Gabriel A.
dc.contributor.authorGonzalez, Angelica L.
dc.date.accessioned2025-01-23T21:16:10Z
dc.date.available2025-01-23T21:16:10Z
dc.date.issued2019
dc.description.abstractEvaluating the magnitude and direction of biases affecting the ecological information captured by death assemblages is an important prerequisite for understanding past, present, and future community-environment relationships. Here, we establish the ecological fidelity andspatiotemporal resolution of an overlooked source of fossil remains: the soil arthropod assemblages found in rodent middens (that span from the present to >44,420 cal yr BP) collected in the central Atacama Desert of northern Chile. We evaluated the "live-dead agreement" across four sources of soil arthropod data; two contemporary surveys of live communities (i.e., live), and two sources of death assemblages (i.e., dead). Although live-dead agreements and diversity indices are highly variable among samples (live and dead assemblages), our results consistently demonstrate that an average fossil midden (i) better captures the structure and composition of living communities than species richness per se; (ii) offers a spatially-resolved picture of those communities at local scales; and (iii) is only weakly affected by time-averaging. The fine spatio-temporal resolution of fossil midden records in the Atacama, and most likely other areas of the world where rodent middens occur offers ecological information on the structure and composition of fossil arthropod assemblages potentially over many thousands of years. This information is reliable enough to establish historical baselines before past and ongoing anthropogenic impacts. (C) 2019 Elsevier Ltd. All rights reserved.
dc.fuente.origenWOS
dc.identifier.doi10.1016/j.quascirev.2019.02.029
dc.identifier.eissn1873-457X
dc.identifier.issn0277-3791
dc.identifier.urihttps://doi.org/10.1016/j.quascirev.2019.02.029
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/101116
dc.identifier.wosidWOS:000465057500002
dc.language.isoen
dc.pagina.final25
dc.pagina.inicio15
dc.revistaQuaternary science reviews
dc.rightsacceso restringido
dc.subjectArthropods
dc.subjectDeath assemblages
dc.subjectHistorical baseline
dc.subjectHolocene
dc.subjectTaphonomy
dc.subjectTime averaging
dc.subject.ods13 Climate Action
dc.subject.odspa13 Acción por el clima
dc.titleEcological fidelity and spatiotemporal resolution of arthropod death assemblages from rodent middens in the central Atacama Desert (northern Chile)
dc.typeartículo
dc.volumen210
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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